Paper-receiving table.



J- L GIDEON. PAPER RECEIVING TABLE. APPLICATION FILED MAYII, I913-Patented June 20, 1916.

daflm' L. Gideon-u.

ml: COLUMBIA PLANQGRAPH c0., WASHINGTONX D. c-

PAPER-RECEIVING TABLE.

Specification of Letters Patent.

Patented June 2o, mic.

Application filed May 17, 1913. Serial No. 768,340.

To all 10 hom it may concern;

Be it known that 1, JOHN L. Gannon, a citizen of the United States, anda resident of Omaha, in the county of Douglas and State of Nebraska,have invented certain new and useful Improvements in Paper- ReceivingTables, of which the following is a. specification.

My invention relates to receiving tables for use with automaticsheet-delivering devices on printing presses.

It is the object of my invention to provide a simple, inexpensive andconvenient paperreceiving table, especially adapted for use inconnection with my paper-feeding attachments for Gordon presses, forwhich I have made application for Letters Patent, filed Feb. 21, 1913,Serial No. 750,011.

In the accompanying drawings, Figure 1 is a side view of mechanismembodying my invention, together with the associated parts of the pressand of the sheet-severing and delivering mechanism, Fig. 2 is a frontview of the receiving-table and actuating mechanism therefor, and Fig. 3is a plan view of the table-actuating mechanism.

In Fig. 1 there is shown a portion of the main frame 1 of a press, thesame having mounted on the upper part thereof the frame 2 of thepaper-feeding and sheet-delivering mechanism. The said mechanismdelivers the sheets at a point between the sides of the frame 2 near thefront part thereof, as described in the above mentioned application.

The receiving-table and its actuating mechanism is supported on a pairof rods 3 which are secured to and extend down wardly from the frame 2.At the lower ends of the rods 3 a cross-frame 4 is secured to them andconnects them to each other. At the center of the cross-frame is a hub 5having a vertical cylindrical opening through it. A ratchet-wheel 6 hasan elongated cylindrical hub or sleeve 7 which extends through the hub5, fitting revolubly therein. The sleeve has a shoulder thereon near theupper part thereof which rests on the upper side of the cross-frame 4 soas to hold the ratchet-wheel slightly above the same. A collar 8 issecured to the sleeve below the hub to prevent the sleeve beingwithdrawn therefrom. A threaded rod 9 passes slidably through theratchet vheel and the sleeve 7 and supports at its upper end the table10,

At the ends of the table are secured the guide-members 11 which extendout laterally and slidably engage the rods 3. The threads on the rod 9are of the kind known as buttress or ratchet threads, being formed withthe lower sides perpendicular to the axis of the rod, like a squarethread, and with the upper sides beveled or inclined like a V-thread. Adi'vided'nut 12 is connected with the ratchet-wheel and engages thethreaded rod above the wheel. Each part of the nut is pivotallyconnected with the wheel by means of an arm13, and the parts areyieldably held together by springs 1-1 of which the ends are connectedto lugs on the sides of the parts, as shown in Fig. 8.

For actuating the ratchet-wheel there is a pawl-lever 15 which ispivoted on the part of the sleeve 7 above the frame t and beneath theratchet-wheel. On said lever is carried a pawl 16 which is yieldinglyheld 111 engagement with the wheel by a spring 17. A curved lever 18 ispivoted on the frame 4 near one end thereof, and one end of the saidlever is pivotally connected with a rod 19 which extends to and issimilarly connected to the outer end of the pawl-lever. The other end ofthe lever 18 is connected by means of a rod 20 with a reciprocating partof the press, such as the bed, so as to cause a reciprocating movementof the said lever 18 and the pawl-lever, such movements beingsynchronous with the movements of the press and the sheet-deliveringmechanism. At each movement of the pawl-lever the ratchetwlieel isadvanced one tooth and, the nut 12 being similarly turned, the threadedrod is slightly lowered. The parts are so proportioned that the loweringof the rod and receiving-table at each movement of the ratchet-wheel isapproximately equiv alent to the thickness of one of the sheets of paperdelivered to the table. Thus as the sheets accumulate on the table thetop of the pile A is maintained at a substantially uniform level. Afterthe mechanism has been in operation for such a time that the table hasbeen lowered to a point near the lower limit of its movement, the pileof sheets A may be removed from the table and the same raised to itsfirst position. To raise the table it is merely necessary to pull itupwardly, upon which the beveled or inclined upper sides of the ratchettlireads on the rod 9 will spread apart the members of the divided nut12 so that the rod can pass through it. WVhen the table is raisedsufliciently the springs 14 close the nut onto the rod again, and theintermittent lowering of the table may proceed as before described.

Now, having described my invention, What I claim and desire to secure byLetters Patent is:

l. A sheet-receiving attachment for print ing presses comprising a crossframe, separated parallel rods each fiXed at one end to the cross frameand adapted to be connected to a portion of the frame of the machine atthe other end to hold the cross frame suspended, a sheet-receiving tablehaving members engaging with said rods for guiding the table, a screwshaft connected to the underside of the table and extending down throughsaid cross frame, and means including a screw threaded member supportedby said cross frame for cooperat- Copies of this patent may be obtainedfor five cents each,

' Washington, D. 0.

ing with said screw threaded rod to raise and lower the same.

2. A sheet-receiving attachment for printing presses comprising twoparallel rods adapted to be connected at their upper ends to the frameof a printing press, a cross frame rigidly connected to the lower endsof the rods, a sheet-receiving table slidable up and down upon the rods,a screw extending downwardly from the under side of the table throughsaid cross frame, and means carried'by the cross frame and including anut cooperating with said screw for raising and lowering the screw andthe table.

In testimony whereof I have hereunto subscribed my name in the presenceof two witnesses. JOHN L. GIDEON.

Witnesses:

D. O. BARNELL, A. R. MITCHELL.

by addressing the "Commissioner of Patents,

